Lesson Plan
Curated OER

Tile Patterns I: Octagons and Squares

For Teachers 7th - 9th Standards
This can be used as a critical thinking exercise in congruence or as a teaching tool when first introducing the concept. Four octagons are arranged in such a way that a square is formed in the middle. With this information, geometry...
Lesson Plan
Curated OER

Get in Shape with Geometry

For Teachers K - 4th Standards
Using geoboards, computer programs, and hands-on manipulative materials, elementary schoolers engage in a study of two and three-dimensional geometric shapes. This instructional activity is chock full of good teaching ideas on the...
Activity2:31
Jim Noble, Richard Wade & Oliver Bowles

Pyramid Model

For Teachers 8th - 12th Standards
Seeking to derive the formula for the volume of a square pyramid, geometry learners construct six square based pyramids that, when pieced together properly, form a cube. Two short videos demonstrate the relationship...
Lesson Plan
Illustrative Mathematics

Finding an Unknown Angle

For Teachers 4th - 6th Standards
Teach your class how to apply their knowledge of geometry as they explore the unknown. In order to find an unknown angle, students must understand that rectangles have four interior right angles, that right angles have 90 degrees, and...
Lesson Plan
Google

History of Math Lesson Plan

For Teachers 9th - 10th
Learners honor mathematicians who have contributed important discoveries throughout history by researching and creating a report about a famous mathematician and their contributions to the history of mathematics. Pairs of learners...
Lesson Plan
Curated OER

Fish Math

For Teachers K - 1st
Students recognize things that are the same and things that are different. They use shape, size, numbers and color, for recognition. They make fish with different shapes/colors on them and 'fish' for the kind of fish that displays the...
Lesson Plan
Illustrative Mathematics

Grandfather Tang's Story

For Teachers K - 2nd Standards
It's amazing the complex figures that can be made using only a few simple shapes. Following a class reading of the children's book Grandfather Tang's Story by Ann Tompert, young mathematicians use sets of tangrams to create models...
Lesson Plan
Illustrative Mathematics

Counting Squares

For Teachers K - 2nd Standards
Challenge young mathematicians' understanding of squares with this geometry puzzle. The task is simple, identify as many squares as possible in a 3x3 array. Allow learners to work independently or in pairs as they search for squares,...
Lesson Plan
Illustrative Mathematics

Overlapping Rectangle

For Teachers K - 3rd Standards
Challenge young mathematicians' ability to compose and decompose shapes with this fun geometry puzzle. The goal is simple, locate all of the rectangles shown in a picture of three overlapping rectangles. Perform this activity as a whole...
Lesson Plan
Illustrative Mathematics

How Many Leaves on a Tree?

For Teachers 9th - 12th Standards
This is great go-to activity for those spring or fall days when the weather beckons your geometry class outside. Learners start with a small tree, devising strategies to accurately estimate the leaf count. They must then tackle the...
Lesson Plan
Curated OER

Modeling Mania Math Topic: Using Models

For Teachers 4th - 5th
Students examine problem solving techniques when working on spatial problems. They discover how models, sketches, and drawings can be used to understand on something works. They design a model of a bridge using given dimensions and...
Lesson Plan
Curated OER

Applied Science - Science and Math Lab

For Teachers 4th - 11th
Students investigate topology. In this Applied Science lesson plan students explore higher, more abstract mathematics using tangles. Students make topologically related shapes.
Instructional Video4:19
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Curated OER

How Do You Find the Area of a Trapezoid?

For Teachers 7th - 9th
Trapezoids can be tricky! Break down the process of finding the area of a trapezoid with an engaging math video. Learners explore area formula and shown exactly how to plug in information, solve, and simplify. 
Lesson Plan
Curated OER

"Geometry With Quilts"

For Teachers 5th
Fifth graders examine the geometry of quilts. They discuss the history of quilting, design two nine-patch squares, exchange one design on an Internet bulletin board, and construct a hot pad that is quilted.
Lesson Plan
Curated OER

Exploring Area/Perimeter Through Coordinate Geometry

For Teachers 3rd - 4th
Students explore area and perimeter through coordinate geometry using student literature, hands-on manipulatives, and the Internet.
Instructional Video5:25
CK-12 Foundation

Midpoints and Segment Bisectors: Lesson

For Students 6th - 10th Standards
Let's meet in the middle. As part of a comprehensive playlist on basic geometry, the video introduces the definitions of a midpoint and segment bisector. The resource shows a graphical approach to finding the midpoint of a line segment...
Lesson Plan
NTTI

Line 'Em Up!

For Teachers 5th - 8th Standards
Coordinate planes and Cartesian graphing systems are the focus of this math lesson. Learners use video, internet activities, and engage in hands-on activities in order to explore coordinate planes. The materials needed for this lesson...
Lesson Plan
Curated OER

Miras, Mirrors, and Kaleidoscopes!

For Teachers 9th - 12th
Students use hands-on activities to explore transformations. They view a video segment that demonstrate how M. C. Escher employed geometry and transformations to create so many of his famous drawings.
Instructional Video7:11
Curated OER

Rectangular Coordinate System

For Teachers 4th - 6th
Everything you need to understand the rectangular coordinate system is explained in this easy to follow video. Great for elementary to middle schoolers learning about plotting points, graphing, and locating points on a coordinate grid....
Lesson Plan
Curated OER

Shape Up!

For Teachers 2nd - 3rd
An outstanding lesson on teaching the basic shapes and polygon names to young geometers is here for you. In it, learners investigate the role of basic polygons in the strength of structures. They use geoboards, rubber bands, streamed...
Instructional Video
Khan Academy

SAT Prep: Test 1 Section 9 Part 3

For Students 9th - 12th
If it takes a long time to complete the problems on the math SAT, it doesn't matter if they are correct - the problems that are left over will count against the student's score. Sal takes care to show quicker ways to complete problems...
Lesson Plan
Mathalicious

Been Caught Stealing

For Teachers 6th - 8th Standards
You're safe, when calculating the odds of stealing second base! Learners compare the rate of a runner to the distance the ball travels, in a lesson that explores right triangles and measurement. Full of discussion questions and fun...
Lesson Plan
Mathematics Assessment Project

Identifying Similar Triangles

For Teachers 7th - 9th Standards
Math whizzes work with angle sums and exterior angles to figure out the measure of other angles. This particular publication provides comprehensive support in the form of an anticipatory activity, questions designed to prompt discussion,...
Instructional Video8:38
Khan Academy

Test 3 Section 2 Part 5

For Students 9th - 12th
Both algebra and geometry problems are featured in this SAT practice video. Students who struggle to transition between skills on tests (average mean, then diameters and pi, then positive integers) would benefit from Sal's deft handling...

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